package com.shop.vo;

import java.math.BigDecimal;
import java.util.List;

/**
 * 整个购物车
 * 需要计算的属性，必须重写get方法，保证每次获取的时候都要计算
 */
public class Cart {
    List<CartItem> items;  //存储的购物车项数据
    private Integer countNum; //购物车的总
    private Integer countType;
    private BigDecimal totalAmount;
    private BigDecimal reduce = new BigDecimal("0.00");

    public List<CartItem> getItems() {
        return items;
    }

    public void setItems(List<CartItem> items) {
        this.items = items;
    }

    public Integer getCountNum() {
        int count = 0;
        if(items!=null && items.size()>0){
            for (CartItem item : items){
                count += item.getCount();
            }

        }
        return count;
    }



    public Integer getCountType() {
        int count = 0;
        if(items!=null && items.size()>0){
            for (CartItem item : items){
                count += 1;
            }

        }
        return count;
    }


    public BigDecimal getTotalAmount() {
        BigDecimal amount = new BigDecimal("0");
        //计算购物项总价
        if(items!=null && items.size()>0){
            for (CartItem item : items){
                if(item.getCheck()){
                    BigDecimal totalPrice = item.getTotalPrice();
                    amount = amount.add(totalPrice);
                }


            }
        }
        //减去优惠总价
        BigDecimal subtract = amount.subtract(getReduce());
        return subtract;
    }


    public BigDecimal getReduce() {
        return reduce;
    }

    public void setReduce(BigDecimal reduce) {
        this.reduce = reduce;
    }
}
